#VU93301 Resource management error in Linux kernel - CVE-2021-46976

Vulnerability identifier: #VU93301

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-46976

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the auto_active() function in drivers/gpu/drm/i915/i915_active.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/805c990a9c54b9451d3daff640b850909c31ab9d
https://git.kernel.org/stable/c/608441de3976c526b02af4d7063093c8adf351e3
https://git.kernel.org/stable/c/f7520970d5353cb1fa4d9089a1b23669c5da97fe
https://git.kernel.org/stable/c/402be8a101190969fc7ff122d07e262df86e132b

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.